2022高三·全国·专题练习
名校
1 . 已知函数
和
的定义域分别为
和
,若对任意的
都存在
个不同的实数
,使得
(其中
),则称
为
的“
重覆盖函数”.
(1)试判断
是否为
的“2重覆盖函数”?请说明理由;
(2)求证:
是
的“4重覆盖函数”;
(3)若
为
的“2重覆盖函数”,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c296e45b84cf67a98939aa7334e7d478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3eddf991be37d25d033f78bd3511809.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4bc51cc4ce429004c418fff2798c75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a92d9aa8e5df37f014c1667f3f0a0b81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/939528f170f5916486b088f8b2b38360.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(1)试判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b96b909824873058aebdaa54f6c21ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9141286d695d401c6f65a15ddbde4db6.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839f4908d863109c7cafa567f290684e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff81c90ee74435957c4ff431b85cb75b.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bae203b8fa25dc1cedb37fe8aad7ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfa0cd68faae3f44bcc3773c98cd266a.png)
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2022-11-06更新
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5卷引用:上海市川沙中学2023届高三上学期9月月考数学试题